Sound suppression mixer
AssigneeGeneral Electric Company
InventorWilliam H. Brown
Life of this patent
Estimating the term…
Abstract
A gas turbine engine flow mixer includes at least one chute having first and second spaced apart sidewalls joined together at a leading edge, with the sidewalls having first and second trailing edges defining therebetween a chute outlet. The first trailing edge is spaced longitudinally downstream from the second trailing edge for defining a septum in the first sidewall extending downstream from the second trailing edge. The septum includes a plurality of noise attenuating apertures.
Claims11
A mixer for mixing airflow with exhaust gases generated in a gas turbine engine comprising:
- at least one generally U-shaped chute having first and second longitudinally extending and transversely spaced apart sidewalls joined together at a leading edge over which are flowable said exhaust gases, and defining therebetween a first channel for channeling said airflow;
- said first and second sidewalls further having first and second trailing edges defining therebetween an elongate chute outlet for discharging said airflow from said chute for mixing with said exhaust gases;
- and
- said first trailing edge being spaced longitudinally downstream from said second trailing edge for defining a septum in said first sidewall extending downstream from said second trailing edge, said septum having a plurality of spaced apart apertures for attenuating noise generated upon mixing of said exhaust gases and said airflow.
A mixer for mixing airflow with exhaust gases generated in a gas turbine engine comprising:
- at least one generally U-shaped chute having first and second longitudinally extending and transversely spaced apart sidewalls joined together at a leading edge over which are flowable said exhaust gases, and defining therebetween a first channel for channeling said airflow;
- said first and second sidewalls further having first and second trailing edges defining therebetween a chute outlet for discharging said airflow from said chute for mixing with said exhaust gases;
- and
- said first trailing edge being spaced longitudinally downstream from said second trailing edge for defining a septum in said first sidewall extending downstream from said second trailing edge, said septum having a plurality of spaced apart apertures for attenuating noise generated upon mixing of said exhaust gases and said airflow, wherein said apertures extend through said septum;
- and
- a plurality of said chutes transversely spaced apart from each other with said first and second sidewalls of adjacent ones of said chutes facing each other for defining therebetween a second channel for channeling said exhaust gases therebetween;
- and wherein
- said first trailing edges of said chutes are transversely aligned in a first common plane;
- said second trailing edges of said chutes are transversely aligned in a second common plane disposed upstream of said first common plane;
- said septums of said adjacent chutes face each other without obstruction from said chute second trailing edges;
- and
- said second channel is in the form of a converging-diverging channel having a chute throat defined between said first and second sidewalls of said adjacent chutes.
Dependencies are inferred from the claim text.